Preliminary Information Integrated Circuit Systems, Inc. M660-02 DUAL SAW, SELECTABLE FREQUENCY VCSO nFOUT FOUT The M660-02 is a dual SAW, selectable frequency VCSO frequency source for low-jitter clock generation. An integrated SAW (surface acoustic wave) delay line implements the high-Q VCO (voltage controlled oscillator) function, which results in low output phase noise and very low jitter. The M660-02 is available in a range of center frequencies from 500 to 700MHz. Minimum pull-range is ±50 ppm (wider pull-range is available). The M660-02 is well suited for phase-locked loop implementations, clock and data recovery circuits, and other timing applications in telecom and optical fiber networking systems (e.g., OC-48, OC-192). VCC PIN ASSIGNMENT (9 x 14mm SMT) 6 5 4 M660-02 M660 2 3 F_SEL GND (Top View) 1 VIN GENERAL DESCRIPTION Figure 1: Pin Assignment FEATURES Sample of Available Output Frequencies ◆ Two integrated SAW devices VCSO Center Frequency1 (MHz) Applications ◆ Supports multi-rate optical interface requirements 622.0800 SONET/SDH ◆ VCSO center frequencies from 500 to 700 MHz (Specify center frequency at time of order) 625.0000 Gigabit Ethernet ◆ Low phase jitter 0.19ps rms typical (50kHz-80MHz) 644.5313 Gigabit Ethernet FEC ◆ Low phase noise -70dBc/Hz @ 1kHz offset 669.3265 SONET/SDH FEC ◆ Selectable output frequency ◆ Differential 3.3V LVPECL output Table 1: Sample of Available Output Frequencies Note 1: Specify VCSO center frequency at time of order ◆ Single 3.3V power supply ◆ Small 9 x 14mm SMT (surface mount) package BLOCK DIAGRAM M660-02 M660 SAW Delay Line VCSO Phase Shifter FOUT VIN nFOUT SAW Delay Line VCSO Phase Shifter F_SEL Figure 2: Block Diagram M660-02 Datasheet Rev 3.0 Revised 10Apr2003 M660-02 Dual SAW, Selectable Frequency VCSO Integrated Circuit Systems, Inc. ● Communications Modules ● w w w. i c s t . c o m ● tel (508) 852-5400 M660-02 Integrated Circuit Systems, Inc. DUAL SAW, SELECTABLE FREQUENCY VCSO Preliminary Information PIN DESCRIPTIONS Name VIN I/O F_SEL Input 3 GND Ground 4 5 6 FOUT nFOUT VCC Number 1 2 Configuration Description Input Internal pull-down resistor1 Tuning control voltage. Frequency select: Logic 1 selects Frequency 2. Logic 0 selects Frequency 1. Power supply ground connections. Output No internal terminator Power Clock output pair. Differential LVPECL. Power supply connection, connect to +3.3V. Table 2: Pin Descriptions Note 1: See “Frequency Select” in Table 5, DC Characteristics on pg. 3. ABSOLUTE MAXIMUM RATINGS1 Symbol Parameter Rating Unit VI Inputs -0.5 to VCC +0.5 V VO Outputs -0.5 to VCC +0.5 V VCC Power Supply Voltage 3.63 V TS Storage Temperature -55 to +125 oC Table 3: Absolute Maximum Ratings Note 1:Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings ard stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in Recommended Conditions of Operation, DC Characteristics, or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. RECOMMENDED CONDITIONS OF OPERATION Symbol Parameter VCC TA Positive Supply Voltage Min Typ Max 2.97 3.3 3.63 -40 Ambient Operating Temperature 25 Unit V oC +85 Table 4: Recommended Conditions of Operation M660-02 Datasheet Rev 3.0 Integrated Circuit Systems, Inc. 2 of 4 ● Communications Modules Revised 10Apr2003 ● w w w. i c s t . c o m ● tel (508) 852-5400 M660-02 Integrated Circuit Systems, Inc. DUAL SAW, SELECTABLE FREQUENCY VCSO Preliminary Information ELECTRICAL SPECIFICATIONS DC Characteristics Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =500-700MHz, Outputs terminated into 180Ω to ground Symbol Parameter Power Supply VCC Control Voltage Pin Positive Supply Voltage VCC ICC Power Supply Current VIN Input Control Voltage Range Min Typ Max Unit 2.97 3.3 3.63 V 90 125 mA Vcc V 0 VIN VIN Input Impedence VIN Modulation Bandwidth Frequency Select1 kΩ 1000 kHz VIH Input High Voltage 2 Vcc + 0.3 V VIL Input Low Voltage -0.3 0.8 V IIH Input High Current 5 µA IIL Input Low Current F_SEL µA -150 Rpulldown Internal Pull-down Resistor Differential Outputs 100 kΩ 51 VOH Output High Voltage Vcc - 0.98 VOL Output Low Voltage VP-P Peak to Peak Output Voltage IOUT Output Current FOUT, nFOUT Vcc - 1.95 0.475 Vcc - 0.75 V Vcc - 1.63 V 0.625 0.85 VP-P 20 mA Table 5: DC Characteristics Note 1: Internally pulled down to Logic 0 (Frequency 1) if left unselected. AC Characteristics Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =500-700MHz, Outputs terminated into 180Ω to ground Symbol Parameter Frequency FOUT Min Output Center Frequency Range APR fSTAB Absolute Pull-Range Frequency Stability LIN Tuning Linearity KVCO VCO Gain Outputs 1 J(t) Max Unit 700 MHz ±50 % 6 @622.08MHz SSB (single sideband) Phase Noise, offset from carrier Jitter (rms) odc Output Duty Cycle 2 tR Output Rise Time 2 tF Output Fall Time 2 230 ppm/V -77 dBc -41 1kHz Offset -68 55 dBc/Hz dBc/Hz dBc/Hz dBc/Hz ps rms ps rms % 275 400 ps 20% to 80% 275 400 ps 20% to 80% -50 10kHz Offset -97 100kHz Offset -122 12kHz to 20MHz 0.37 50kHz to 80MHz 0.19 for FOUT, nFOUT for FOUT, nFOUT Table 6: AC Characteristics Note 1: Consult ICS for availability of other APRs. Note 2: See Parameter Measurement Information on pg. 4. Integrated Circuit Systems, Inc. 3 of 4 ● VIN = 0.3 to 3.0V Best fit straight line 100Hz Offset 45 M660-02 Datasheet Rev 3.0 Notes ppm ppm p-p 110 Non-harmonic Spurious Φn Typ 500 Communications Modules Revised 10Apr2003 ● w w w. i c s t . c o m ● tel (508) 852-5400 M660-02 Integrated Circuit Systems, Inc. DUAL SAW, SELECTABLE FREQUENCY VCSO Preliminary Information PARAMETER MEASUREMENT INFORMATION Output Rise and Fall Time Output Duty Cycle Clock Outputs nFOUT 80% 80% VSWING 20% tF 20% tR FOUT tPW (Output Pulse Width) tPERIOD Figure 3: Output Rise and Fall Time odc = tPW tPERIOD Figure 4: Output Duty Cycle DEVICE PACKAGE - 9 x 14mm SMT (Surface Mount) Package Mechanical Dimensions: Dimensions are in inches; dimensions in [ ] are in mm Unless otherwise specified, all dimensions are ±0.005 [0.13] Figure 5: Device Package - 9 x 14mm SMT (Surface Mount) Package ORDERING INFORMATION For Output Frequencies (MHz) Frequency 1, Frequency 2 e.g., 622.0800, 669.3265 Order Part Number Standard Output Frequencies AA 622.0800 AG 669.3120 AB 625.0000 AH 669.3265 M660-02-Ax-Ax M660-02-AA-AH AC 627.3296 AI 670.8386 AD 644.5313 AJ 672.1600 Table 7: Ordering Information AE 666.5143 AK 690.5692 AF 669.1281 AL 693.4830 Table 8: Standard Output Frequencies Consult ICS for the availability of other VCSO frequencies. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. M660-02 Datasheet Rev 3.0 Integrated Circuit Systems, Inc. 4 of 4 ● Communications Modules Revised 10Apr2003 ● w w w. i c s t . c o m ● tel (508) 852-5400